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3 years ago

Which of the following statements about osmosis is correct?

Biology

1 answer:

Pavlova-9 [17]3 years ago

5 0

Answer:

D. The presence of aquaporins (proteins that form water channels in the membrane) should speed up the process of osmosis.

Explanation:

Water moves in the cells through osmosis which means water moves from its higher concentration to lower concentration. In many animals and plants, water channels are also present which is called aquaporins which allow the water to move through it in and out of cell more quickly.

The rate of diffusion by channel proteins is higher than simple diffusion therefore the aquaporins speed up the process of osmosis. No ATP is required to transport the water through aquaporin channel proteins.

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At the end of telophase, what must occur?

MArishka [77]

Answer:

cytokinesis

Explanation:

cytokinesis is when the cell splits into two daughter cells.

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2 years ago

You have just delivered a premature baby. Your assessment reveals that he is breathing adequately; however, his heart rate is 90

s2008m [1.1K]

Answer:

The answer is letter B, keep him warm and ventilate with BVM.

Explanation:

In order to know more about the answer, let's check out the meaning of "Premature Baby" first.

Premature Baby- a baby born through premature birth (fewer than 37 weeks). Babies are normally born at the usual 40 weeks. Health problems may occur with premature babies, thus it is very important to monitor them.

In the situation above, the premature baby's heart rate is only 90 beats/min. A resting heart rate for a newborn infant is 130-150 beats per minute. This means that the baby above has a slow heart rate. In order to increase the hear rate, it is important to keep the baby warm and to ventilate with a "Bag Valve Mask" (BVM). An increase in internal temperature increases the heart rate. Increasing ventilation will also help increase the heart rate.

Remember: Inhalation increases the heart rate.

4 0

3 years ago

Which of the following is a biotic component that would help determine the health of an ecosystem

Elden [556K]

Answer:plants

Explanation:the greener and more vegetated ecosystem is more healthier with plenty of habitat,food and moisture provided for other living organisms and also attracting agents like pollinators .

7 0

3 years ago

How will you ensure that ecological balance is maintained in your ecosystem?

posledela

Explanation:

Taking steps to reduce or eliminate pollution from nonpoint sources such as streets and farms will help to maintain the ecological balance. Sewage and run-off of agricultural fertilizer can cause the rapid growth of algae in lakes and streams. The growth of algae blocks sunlight and depletes the oxygen in the water.

4 0

3 years ago

Read 2 more answers

Thymine dimers can be repaired by Photoreactivation Repair or Nucleotide Excision Repair. - true or false?

Aleksandr-060686 [28]

Answer:True

Explanation:Basically thymine diamers are mismatched pairs (thymine binds with another thymine instead of binding with adenine) and may lead to unwanted results so the mismatching can be repaired by using two methods which are as follows :

1-the PRE enzyme activated by blue light breaks the thymine diamer and some of the surrounding bonds the strand is cut and DNA polymerase then restores the normal base pairing

2-UVR system breaks dimer creating a gap when a gap is created and the molecules appear unpaired it is filled by proof readers hence restoring normal base pairing.

6 0

3 years ago